Strontium salt of dibrom-behenic acid.



- UNITED sTArns PATENT OFFICE.

EMIL FISGHER, OF BERLIN, GERMANY, ASSIGNOR TO FARBENFABRIKEN VORM.FRIEDR. BAYER & (30., OF ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

s'rnon'rrtm SALT or DIBROM-BEHENIC non).

Specification of Letters Patent.

Patented May 4, 1909.

Application filed January 28, 1909. Serial No. 474,811.

from" 1 to 2 grams.

erucic acid with bromin.

My new preparation is obtained by converting the free dibrombehenic acidor its alkaline salts into the strontium salt. The dibrombehenic acid isprepared by treating The reparation of the strontium salt of dibromehenic acid is carried out as follows: 49.8 (parts of dibrombehenic acidare dissolve in caustic potash by shaking it at ord nary temperaturewith highly diluted caustic potash (about 1/40 normal) containing 5.6parts of KOH. A dilute a ueous solution of 13.3 parts of chlorid ostrontium (SrCl,+6 aq) is added to the solution, and

it is stirred until the colorless flocculent precipitate has settled. Itis filtered off with suction, pressed, washed with alcohol, mixed up bystirring with cold water, filtered off with suction and subsequentlywashed with I water until the wash-water is free from chlorin. It isthen washed with alcohol and dried in vacuo. The strontium salt thusobtained is a white, tasteless and odorless powder almost insoluble inwater and alcohol, soluble in ether and chloroform. It has the formula:(C H O BrQ sr.

Having now described my invention and in what manner the same is to beperformed, what I claim as new and desire to secure by Letters Patent isA The herein-described strontium salt of dibrombehenic acid of thefollowing formula obtainable by treating an alkaline solution ofdibrombehenic acid with chlorid of strontium, which strontium salt is awhite solid body, tasteless, odorless and almost insoluble in water andalcohol, soluble in ether and chloroform, and which is a valuablesubstitute for otassiuni bromid, substantially as hereinbe oredescribed.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

EMIL FISCHER.

Witnesses:

WOLDEMAR HAUP'r, HENRY HASPER.

